"""V8.24: persisted 2-level layout editing, safe public rendering and migration compatibility."""
from pathlib import Path
import pytest
from bs4 import BeautifulSoup
from app import blueprints
from tests.test_factory import client,create

ROOT=Path(__file__).resolve().parents[1]


def make_nested():
    root=blueprints.new_block('layout')
    inner=blueprints.new_block('layout',{'gap':18})
    leaf=blueprints.new_block('image_text',{'title':'Inner leaf title','description':'Nested content'})
    inner['columns'][0]['blocks']=[leaf]
    root['columns'][1]['blocks']=[inner]
    return root,inner,leaf


def test_deep_nested_output_valid_and_safe():
    root,inner,leaf=make_nested()
    clean=blueprints.validate_blocks([root])
    markup=blueprints.render_blocks(clean,{'name':'Example'},{'title':'Home'},[])
    soup=BeautifulSoup(markup,'html.parser')
    assert soup.select_one(f'.sf-layout-grid[data-layout="{root["id"]}"]')
    assert soup.select_one(f'.sf-layout-grid[data-layout="{inner["id"]}"]')
    assert soup.select_one(f'.sf-layout-column .sf-section[data-block="{leaf["id"]}"]')
    assert 'Inner leaf title' in soup.get_text(' ')
    assert 'siteforge-studio-canvas' not in markup  # never emitted into public HTML


def test_reject_exceeding_allowed_nested_layout_depth():
    root,inner,_=make_nested()
    extra=blueprints.new_block('layout')
    inner['columns'][0]['blocks'].append(extra)
    with pytest.raises(ValueError,match='最多嵌套两层'):
        blueprints.validate_blocks([root])


def test_reject_duplicate_ids_in_deep_nested_layout():
    root,inner,leaf=make_nested()
    inner['columns'][1]['blocks'].append({**leaf})
    with pytest.raises(ValueError,match='重复'):
        blueprints.validate_blocks([root])


def test_deep_nested_draft_and_history_round_trip(client):
    sid=create(client)
    eid=next(row['id'] for row in client.get(f'/api/sites/{sid}/entries').json() if row['route']=='/')
    root,inner,leaf=make_nested()
    url=f'/api/sites/{sid}/pages/{eid}/studio-draft'
    saved=client.put(url,json={'blocks':[root],'page_template':'home','layout_mode':'replace','expected_revision':0})
    assert saved.status_code==200,saved.text
    loaded=client.get(url);assert loaded.status_code==200
    assert loaded.json()['blocks'][0]['columns'][1]['blocks'][0]['columns'][0]['blocks'][0]['id']==leaf['id']
    assert client.put(url,json={'blocks':[root],'page_template':'home','layout_mode':'replace','expected_revision':0}).status_code==409


def test_deep_nested_editor_helpers_and_isolated_script():
    helper=(ROOT/'app/static/editor-helpers.js').read_text()
    editor=(ROOT/'app/static/editor.js').read_text()
    bridge=(ROOT/'app/static/studio-canvas-bridge.js').read_text()
    assert 'findChildInRoot' in helper
    assert 'findLayout' in helper
    assert 'setNestedLayoutPreset' in editor
    assert 'setNestedLayoutGap' in editor
    assert 'childQuickEditor' in editor
    assert 'siteforge-studio-canvas' in bridge
    assert 'event.source!==frame.contentWindow' in editor
    assert 'eval(' not in bridge and 'new Function(' not in bridge


def test_nested_preview_endpoint_and_responsive_values(client):
    sid=create(client)
    eid=next(row['id'] for row in client.get(f'/api/sites/{sid}/entries').json() if row['route']=='/')
    root,inner,leaf=make_nested()
    inner['mobile_columns']=1
    inner['tablet_columns']=2
    inner['gap']=32
    preview=client.post(f'/api/sites/{sid}/pages/{eid}/editor-preview',json={
        'blocks':[root],'page_template':'home','layout_mode':'replace'})
    assert preview.status_code==200,preview.text[:600]
    assert 'Inner leaf title' in preview.text
    assert 'data-layout="'+inner['id']+'"' in preview.text
    assert 'studio-canvas-bridge.js' in preview.text or 'siteforge-studio-canvas' in preview.text


def test_editor_uses_no_json_input_for_deep_nested_components():
    source=(ROOT/'app/static/editor.js').read_text()
    for feature in ('addNestedChild','setNestedDeviceColumns','setNestedLayoutGap','setNestedLayoutPreset',
                    'findChildInRoot','findLayout','Studio.applyMedia(r.url)'):
        assert feature in source


def test_save_nested_leaf_as_site_scoped_reusable_component(client):
    sid=create(client)
    _,_,leaf=make_nested()
    created=client.post(f'/api/sites/{sid}/components',json={'name':'海运图文', 'block':leaf})
    assert created.status_code==200,created.text
    cid=created.json()['id']
    loaded=client.get(f'/api/sites/{sid}/components')
    assert loaded.status_code==200
    assert any(row['id']==cid and row['block']['title']=='Inner leaf title' for row in loaded.json())
    stale=client.put(f'/api/sites/{sid}/components/{cid}',json={
        'name':'不允许覆盖','expected_version':0,'block':leaf})
    assert stale.status_code==409